song.rb

define :guitar_chords do
  in_thread do
    4.times do
      with_fx :echo, mix: 0.3, phase: 0.25 do
        sample :guit_em9, rate: 1
      end
      sleep 4
    end
  end
end

define :synth_bike do
  with_synth :dsaw do
    with_fx(:slicer, phase: [0.25,0.125].choose) do
      with_fx(:reverb, room: 0.5, mix: 0.3) do
        start_note = chord([:b1, :b2, :e1, :e2, :b3, :e3].choose, :minor).choose
        final_note = chord([:b1, :b2, :e1, :e2, :b3, :e3].choose, :minor).choose
        
        p = play start_note, release: 8, note_slide: 4, cutoff: 30, cutoff_slide: 4, detune: rrand(0, 0.2), pan: rrand(-1, 0), pan_slide: rrand(4, 8)
        control p, note: final_note, cutoff: rrand(80, 120), pan: rrand(0, 1)
      end
    end
  end
end

in_thread do
  guitar_chords
  loop do
    with_fx :reverb, room: 1 do
      sample :bd_boom, amp: 10, rate: 1
    end
    sleep 4
  end
end

sleep 12

in_thread do
  synth_bike
  loop do
    sample :drum_bass_hard, amp: 0.8
    sleep 0.25
    play :e2, release: 0.2
    sample :elec_cymbal, rate: 12, amp: 0.6
    sleep 0.25
  end
end

sleep 12

in_thread do
  guitar_chords
end

sleep 16

synth_bike

sleep 16

in_thread do
  use_random_seed 2000
  128.times do
    c = rrand(70, 130)
    n = (scale :e1, :minor_pentatonic).take(3).choose
    synth :tb303, note: n, release: 0.1, cutoff: c if rand < 0.9
    sleep 0.125
  end
  
  2.times do
    synth_bike
  end
end

sleep 32

in_thread do
  guitar_chords
end